At which minimum angle will the driving force become greater than the resisting force in a mass movement, according to Figure 15.13 in your textbook?

A) 0
B) 32
C) 45
D) 60


Answer: B

Environmental & Atmospheric Sciences

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Lord Kelvin calculated Earth was 20-400 million years old. Why was he wrong?

a. He didn’t account for the erosion of sediments. b. He didn’t account for the presence of salt deposits. c. He wrongly assumed the oceans were initially fresh. d. His thermometer was incorrectly calibrated.

e. He didn’t know Earth had an internal heat source.

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All states occupy and utilize their full territory

Indicate whether the statement is true or false.

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The principle of ________ states that fragments included in a host rock must be ________ than the host rock.

A. inclusion; younger than B. inclusion; the same age as C. intrusion; younger than D. inclusion; older than E. intrusion; older than

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You have a solution of salt dissolved in water. Why might a drop in temperature result in the dissolved minerals precipitating out of solution?

What will be an ideal response?

Environmental & Atmospheric Sciences